Dump gate



Dec. 8, 1953 F. MURRAY 2,661,375

DUMP GATE Filed Jan. 15, 1951 L 2 Sheets-Sheet 1 Power Fig. I.

Fig. 2.

Fig. 3.

Fred Murray INVENTOR.

BY (#1109 3m To 5 Power F. MURRAY DUMP GATE Dec. 8, 1953 Filed Jan. 15 1951 2 Sheets-Sheet 2 Fred Murray INVENTOR.

BY 21m Patented Dec. 8, 1953 UNITED STATES PATENT OFFICE DUMP GATE Fred Murray, Butler, Pa. Application January 15, 1951, Serial No. 205,993

.2 Claims.

The present invention relates to new and useful improvements in dump gates for hoppers, bins, railway cars, dump trucks and other equipment where bulk material is handled.

An important object of the invention is to provide a gate having an upwardly and outwardly swinging movement into a partial or fully open position and wherein the weight of the material is utilized in holding the gate closed.

Another object is to provide novel sealing means for the lower edge of the gate and which is movable with the gate out of the path of the dumped material when the gate is opened.

A further object is to provide a device of this character of simple and practical construction, which is strong and durable, efficient and reliable in operation, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a bottom plan view;

Figure 2 is a side elevational view;

Figure 3 is a. rear elevational view;

Figure 4 is an enlarged transverse vertical sectional view taken on a line 44 of Figure 2;

Figure 5 is an enlarged longitudinal vertical sectional view taken on a line 5-5 of Figure 3;

Figure 6 is an enlarged fragmentary sectional view taken on a line 5-6 of Figure 2, and

Figure 7 is an enlarged fragmentary sectional View taken on a line l-l of Figure 4.

Referring now to the drawing in detail, wherein for the purpose of illustration, I have disclosed a preferred embodiment of my invention the numeral 5 designates the discharge shell of a bin, hopper or the like 6, the shell being open at its opposite sides and having ends I connected at their lower outer edges by channel beams 8 which extend across the bottom of the open sides. Angle iron beams 9 extend across the top of the open sides.

Bearings ll) are welded or otherwise suitably fixed on top of the lower channel beams 8 and in which shafts II are journalled. Collars I2 are welded or otherwise suitably secured to each shaft II and to which sheet metal arms l3 are likewise welded. The arms are constructed in the shape of substantially 90 segments of a circle with the corners of the right angle edges l4 and [5 of the arms welded to the collars l2 to form the axis or pivot for the arms and arcuate sheet metal doors It are welded, or integrally formed at the curved edge of the arms to meet in confronting'relation at their lower edges, when the doors are closed and to diverge in an are at their upper edges toward the open sides of shell 5. An upstanding flange I! is formed at the upper edges of the doors to abut the downwardly extending flange I 5 of the upper angle iron beams 9 to form stops for the doors in their closedposition and also to seal the upper edges of the doors.

The end edges of the doors are also formed with upstanding flanges l9 engaged behind sealing strips 20 at the lower edges of a substantially V-shaped plate 2! curved at its edges in the arc of doors l6 and welded or otherwise suitably fixed against the inner sides of end walls I. The strips 20 form sealing channels at the ends of the doors, and arcuate rails 22 are suitably carried by the plates 2| under the ends of the doors to support the weight thereof.

A sealing strip 23 is pivoted at one longitudinal edge to the rear lower edge of one of the doors by brackets 24 and 25 to swing behind the door, when the door is raised into an open position, as shown by the dotted lines in Figure 6 and the sealing strip 23 swings upwardly under the lower edges of both doors, as shown by the full lines in Figure 6, by means of an upwardly curved lip 26 on the other longitudinal edge of the strip riding within substantially arcuate shaped cam stops 2'! welded to the inside of the end walls I at their lower edges to close the sealing strip 23 against the lower edges of the doors.

The pair of shafts H at the lower sides of the shell 5 are connected to each other for uniform opening and closing movement of the doors by a cross shaft 28 driven at one end by a suitable power source and providing worm and worm gear drivin means 29 between the cross shaft and the pair of shafts H.

In the operation of the device, shafts I I swing the doors I 6 upwardly and outwardly at the open sides of shell '5 into a partial or fully open position whereby the material in hopper or bin 6 may be discharged at the center of the shell as the lower edges of the doors move away from each other. As the doors raise the sealing strip 23 swings behind its attached door out of the path of the material and the doors ride closely under the lower flanges I8 of the angle iron beams 9 to prevent discharge of the material at the open sides of the shell 5.

When the doors are swung downwardly into their closed position the lower edges thereof meet into confronting relation with each other and pivoted sealing strip 23 engages cam stops 2'! to swing the sealing strip upwardly in close sealing engagement with the lower edges of both doors.

In the present embodiment of the invention the shell 5 is shown equipped with double rotary or swingable doors, although it will be understood a construction may be provided wherein a single rotary or swingable door is used.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even 4 though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A door of the class described comprising the combination of a delivery shell having at least one open side and an open bottom, a shaft journalled at the lower open side of the shell, an arcuate door connected to the shaft for rotation about the axis thereof and swingable inwardly and outwardly at the open side of the shell,

downwardly projecting flanges at the upper and end edges of the shell, and upwardly projecting sealing flanges at the upper and end' edges of the door, said end flanges of the shell and door having constant overlapping engagement with each other and said upper flanges of the shell and door having overlapping engagement with each other when the door is closed.

2. A door of the class described comprising the combination of a delivery shell having at least one open side and an open bottom, a shaft journalled at the lower open side of the shell, an arcuate door connected to the shaft for rotation about the axis thereof and swingable inwardly and outwardly at the open side of the shell, a longitudinal sealing strip swingably attached to the lower edge of the door, and a cam stop fixed tothe shell in the path of the strip during closing movement of the door to swing the sealing strip upwardly into sealing engagement with the lower edge of the door.

FRED MURRAY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 689,444 Williams Dec. 24, 1901 1,612,590 Lucka et a1 Dec. 28, 1926 1,850,589 Le Tourneau Mar. 22, 1932 2,069,739 Fildes et a1. Feb. 9, 193'? 2,240,350 Ross Apr. 29, 1941 

